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Design and Development of a MOEMS Accelerometer Using SOI Technology.

José Mireles1,2, Ángel Sauceda1,2, Abimael Jiménez1,2

  • 1Applied Science and Technology Research Center, Instituto de Ingeniería y Tecnología, Universidad Autónoma de Ciudad Juárez, 450 Avenida del Charro, Ciudad Juárez 32310, Mexico.

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Summary
This summary is machine-generated.

This study presents a novel micro-opto-electro-mechanical system (MOEMS) sensor for precise vibrational analysis. The developed sensor demonstrates reliable performance in environments with high electromagnetic interference, suitable for engineering applications.

Keywords:
Fabry–Pérot interferometrydemodulationmicro-opto-electro-mechanical system (MOEMS)silicon-on-insulator (SOI)vibration measurement

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Area of Science:

  • * Micro-electromechanical systems (MEMS)
  • * Optical sensing technologies
  • * Vibrational analysis

Background:

  • * Micro-electromechanical system (MEMS) sensors are crucial for analyzing vibrations in complex systems.
  • * Fabry-Pérot interferometers (FPI) offer high sensitivity and electromagnetic interference (EMI) immunity.
  • * Integrated micro-opto-electro-mechanical systems (MOEMS) combine optical and mechanical functionalities.

Purpose of the Study:

  • * To design, fabricate, and characterize a novel silicon-on-insulator (SOI) MEMS device for vibrational monitoring.
  • * To integrate the MEMS device with an optical fiber and Fabry-Pérot interferometer for enhanced sensing.
  • * To evaluate the sensor's performance under high-g conditions and in electromagnetic interference-prone environments.

Main Methods:

  • * Design and fabrication of a SOI MEMS device featuring a mass structure and spring elements.
  • * Integration of the MEMS device within a metallic package and connection to an optical fiber.
  • * Utilizing a Fabry-Pérot interferometer (FPI) optical system with LabVIEW-based demodulation for displacement interrogation.

Main Results:

  • * The designed MOEMS sensor achieved a main resonant frequency of 1274 Hz.
  • * A damping ratio of 0.0173 was measured, consistent with the analytical model.
  • * The sensor demonstrated stable operation under dynamic conditions up to 7 g.

Conclusions:

  • * The fabricated MOEMS sensor is suitable for accurate vibrational analysis.
  • * The device shows potential for engineering applications requiring vibration monitoring in high-EMI environments.
  • * The integrated design offers a robust solution for demanding sensing tasks.